This
may be a bit of a hijack from Essam’s original question: Can
anyone recommend resources for learning about how to do
things with the Technical submenu under settings, also in
Developer mode?

I’m
quite new to Odoo. I’m really a business process /
implementation project consultant (mostly ERP-related, not
SME), and I have no ambition to become a serious Odoo
developer in Python. I’m too old J.
However the things you can do to customise Odoo, even in
SaaS, look like they are a big strength. I think there a
quite a few people out there who are technical enough to use
those facilities, who could easily be drawn into the Odoo
world.